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Grade 12th passInorganic Chemistry

A cylinder of gas is assumed to contain 11.2 kg of butane.If a normal family needs 20,000kJ of energy per day.The cylinder will last for how many days?(enthalpy for the combustion of butane is -2658kJ)
  1. ​20 days
  2. 35 days
  3. 26 days
  4. 31 days

Profile image of Aishwarya Byreddy
9 Years agoGrade 12th pass
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1 Answer

Profile image of Jayanth Kasaraneni
ApprovedApproved Tutor Answer9 Years ago
for 58 g of butane=2658KJ 
for 11200 g of butane =2658x193.10344826=513268.96550
no. of  days that on cylinder lasts is 513268.96550/20000=26 days(approx.)

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